This image is one in a group of black-and-white cellulose nitrate negatives discovered with Sorensen's collection of 35mm safety/acetate negatives. Man standing at back of container truck at Supplee M…

This image is one in a group of black-and-white cellulose nitrate negatives discovered with Sorensen's collection of 35mm safety/acetate negatives. Trucks at rear of Supplee Milk Factory. Grayscale So…